Tension device



J. BEYER TENSION DEVICE June 19, 1956 Filed Nov. 20, 1953 INVENTOR @TTORNEY 2,751,166 TENSION DEVICE Arnhem, Netherlands, assignor to American Corporation, Enka, N. C., a corporation of Dela- Jenii Beyer,

Enka ware Application November 20, 1953, Serial No. 393,483 4 Claims. (Cl. 242-150) This invention relates to an improved tensioning device for a doubler or cap twister which renders the same particularly suited to the production of crepe.

age and through a rotating hollow spindle positioned coaxially in the hollow interior of the thread package.

rior of the thread package. To this end, thread tensioning devices have been developed which fit on the cap of a cap twister and the tension applied thereby is made adjustable either by magnetic means or by adjustable weights. While this arrangement is of good general utility, it has been found unsuitable for crepe yarn where both the position and inclination of the tensioning disk are so changed that both the angle of contact between the thread and the disk and the pressing force of the disk are decreased to an inadequate level.

It is an object of this invention to overcome the foregoing deficiencies for double twisters so that a prede- It is proposed according to the present invention to use the yarn entering the hollow interior of the yarn package on the twister to follow an angular path providing enlarged areas ment of the angularity of the path as may be necessary for yarns of differing denier.

Other objects and adva ings wherein:

Figure 1 is a view in vertical section of the cap of an otherwise conventional cap twister, and

Figure 2 is a view of a modified type of cap for an otherwise conventional cap twister.

Referring in detail to Figure l, attention is directed to the fact that Kingsbury Patent 2,478,926 discloses the cap present invention applies. The Kingsbury patent discloses a cap having a hollow central interior and it is in such a cap that the present device is intended to be put.

Yarn coming from a stationary package, not shown, enters the cap by passing over the edge of a tube 11, under and then through a coaxial ring 12 and finally over the top edge of a coaxial tube 13 into the central core of It will be immediately recognized that the yarn and both mouth of the tube 13. The ring annular disk 14 which in turn is lar magnet assembly 15. The disk 14 and the magnet assembly 15 are mounted for sliding movement along the tube 13 and are biased upwardly by a spring 16. A flange 17 at the top of the tube 13 and spacing rings or 2,751,166 Patented June 19, 1956 19 thereunder serve to hold the annular shims 18 and disk 14 of the can be increased or decreased to meet dilferent operating conditions.

In order to facilitate varying the number of spacing rings 18 and 19 mounted on the tube parts of the thread tensioning device.

What is claimed is:

1. A thread tensioning device for a double twister comprising a first tube, a ring, supporting means including a surface for supporting said ring coaxially within the first means magnetically to bias said ing surface.

2. A thread tensioning device for a double twister comprising a first tube, a ring, supporting means including a surface for supporting said tube below the upper end thereof, a second tube located 3 coaxially within the ring and having its upper end lying the first tube with the base of the body below the upper in a plane closer than the plane of said ring to the upper end of the tube, a second tube located coaxially within end of the first tube, the upper ends of said tubes and the the body and having its upper end lying in a plane closer lower surface of said ring together defining a thread pasthan the plane of said ring to the upper end of the first sageway from outside the first tube to Within the second, 5 tube, the upper ends of said tubes and the lower surface said second tube having a flange at its upper end, means of said ring together defining a thread passageway from resiliently to bias said supporting means upwardly, means outside the first tube to within the second, said body supsurrounding said second tube and held by its flange to porting means also including means magnetically to bias limit upward movement of said supporting means resultthe base of said body against said supporting surface. ing from said resilient bias and magnetic means constitut- 10 ing a part of said supporting means for biasing said ring gggrgnces Cit d i the file f thi patent against said supporting surface.

4. A thread tensioning device for a double twister com UNITED STATES PATENTS prising a first tube, a hollow frusto-conical body having 1,048,889 Ryden Dec. 31, 1912 a ring at its base, supporting means including a surface 15 1,762,049 Clinton June 3, 1930 for supporting said frusto-conical body coaxially within 2,571,109 Carter et al Oct. 16, 1951 

